are under siege and getting pounded, power is out, new york city, all but cut off. trains and bridges and tunnels closed, while new yorkers deal with a badly damaged construction crane on top of the tallest building in the city. tonight, the city is under massive storm warnings, nbc news begins now. >> this is nbc nightly news. >>> good evening, we wanted to let our viewers on the west coast know what it is like to be on the east coast tonight, the freakishly powerful october storm will go down as one of the worst storms of all time. it is no longer technically hurricane sandy, a sub-tropical cyclone, a nor'easter to some sta states, ten states under emergency, almost half the country warned about high winds all because of this. it has officially made landfall tonight just south of atlantic city, new jersey, and has the power to alter the map of the jersey shore. and we'll see that in action in just a moment. sandy is tonight causing flooding from massachusetts, to all the way west, a cloud bank visible over lake michigan. in new york, all eyes are on the continuing drama of that mass